drop msgs on windows clients?

Hello,

I'm trying to remove the msgs check on the windoze BB 1.08d clients.
I've ran the "drop <hostname> msgs" command from the host and it doesn't appear to do the trick. I've done this in the past with custom checks I've added, and it has worked fine. I noticed the NOCOLUMNS flag you can add to bb-hosts for *nix hosts, but unfortunately in this case, it's only the windows servers I care about.

Any help? Andy